Centralize Onitama animation logic by moving inline Phaser tweens
into a dedicated `tweens.ts` configuration file. This improves
reusability and cleans up spawners and renderers.
Also updated documentation to warn against adding interruptions to
looped tweens to prevent game logic hangs.
Introduces a centralized configuration system and extracts visual
creation logic from spawners into specialized renderer classes:
- CardRenderer
- HighlightRenderer
- PawnRenderer
- SelectionRenderer
This refactor improves separation of concerns by moving Phaser-specific
drawing and animation code out of the spawner/container logic and into
reusable renderer components.
hypercross
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